Fix Chrome DevToolsActivePort crash retry for Selenium 4.0.0-alpha05#1563
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Fix Chrome DevToolsActivePort crash retry for Selenium 4.0.0-alpha05#1563
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The retry logic in GetChromiumDriver only catches TargetInvocationException when the inner exception is WebDriverException. However, Selenium 4.0.0-alpha05 throws InvalidOperationException (not WebDriverException) for 'session not created: Chrome failed to start: crashed' errors that include 'DevToolsActivePort file doesn't exist'. This means the retry never fires for this common transient failure, causing intermittent test failures across CI (dotnet/runtime#124438). Changes: - Broaden catch to also match InvalidOperationException inner exceptions - Add 'DevToolsActivePort file doesn't exist' to retryable error snippets - Detect Windows containers via DOTNET_RUNNING_IN_CONTAINER env var for --no-sandbox (/.dockerenv only exists on Linux) Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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steveisok
approved these changes
Mar 14, 2026
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/ba-g failures are fixed by #1564 |
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Problem
Fixes dotnet/runtime#124438 — intermittent
DevToolsActivePort file doesn't existfailures in WasmTestOnChrome Helix work items.Chrome intermittently crashes on startup in Windows containers, producing:
The existing retry logic in
GetChromiumDriver(3 attempts) never fires for this error because:TargetInvocationExceptionwith innerWebDriverExceptionInvalidOperationException(notWebDriverException) for "session not created" errorsDevToolsActivePortEvidence
From build 1335359, Helix job
8130ae19:Fix
InvalidOperationExceptioninner exceptions (not justWebDriverException)DevToolsActivePort file doesn't existto the retryable patterns--no-sandbox: also checkDOTNET_RUNNING_IN_CONTAINERenv var (Linux Docker detection via/.dockerenvdoesn't work on Windows containers)